This is a discussion on 2012 STI The Dark Side within the Member Show-Off & Photography forums, part of the Community - Meet other Enthusiasts category; Be careful with T6. It ran well for a while on my motor then had a tendency to disappear. If ...

Very well off friends and track days. My seat time in the 4.0 is limited as I can't financially replace the car if something happens. When I go to the track these days, I am usually with a new RS, RS4.0 and several GT-R's. Ironically enough, a properly setup GT-R with mild upgrades will turn a faster lap than both Porsches. It's just not nearly as rewarding. My car does well considering the crowd. I really need to install this new turbo I have sitting on my desk to try to keep up with that amount of power at the track though...

I've considered a GT-R several times, but the lack of a manual means it's not for me. I've also heard the same feedback that they're not very rewarding to drive from quite a few people. They can be made stupid fast just like a 911 Turbo (but are cheaper to buy, mod, and maintain) but aren't known to be a driver's car nearly as much as a 911.

well subaru recommended 5w-30 for our car but after i read a lot of review about rotella 5w-40 and my friends recommended me too why not give it a try?and I'm really happy with rotella t6 so much smoother now.

I've never met anyone in the world that possesses the superhuman abilities to tell a different oil has made their engine run smoother. As to your statement of "why not" use the new oil, I'm curious why you think people you don't know writing reviews about an oil you've never used know more than the Subaru engineers with hundreds (if not thousands) of years of combined engine design experience? And that your friends know more than said engineers? And also if you're going to try another oil, why not use the recommended oil weight of 5w-30 rather than the 5w-40? Subaru does list 5w-40 as acceptable, but doesn't recommend it in the ambient temperature range your vehicle operates in.

Personally I use primarily Mobil 1 in all my vehicles and have for over 15 years, though my recent oil change in my Porsche was with Motul racing oil since the car is primarily a track car and weekend warrior that's driven hard and not a daily driver.

No offense, but I think you should find some more knowledgeable people than your young, inexperienced friends to get car advice from, or take it from general internet reviews of products you know nothing about. Just a friendly piece of advice since it's clear you don't know much about cars. I'm not sure how old you are but I can guess pretty well, and at your age I didn't know nearly as much about cars as I do now. I learned by reading everything I could find from trusted sources, listening to people that had knowledge back then I do now, and by making some mistakes and getting a lot of things right. But it's your car and your money. And while I don't agree with most of your ways, I do think that steering wheel is pretty cool.

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